Carbureter.



J. W. RAYMOND.

CARBURETER. v APPLICATION FILED ooT. s, 1911.

4 if mul Il!! J. W. RAYMOND. GARBURETER.

APPLICATION FILED ooT.-9,1s11,

'K Pacnted Sept. 3, 1912.

v To all whom it may concern:

UNITED sfrnjps riiwruNT OFFIOE.

JOHN W. BAYMONDfOF DAYTON, OHIO, ASSIGNOR TO THE AIR FRICTION CARBURETOR COMPANY, OF DAYTON, OHIO, A CORPORATION 0F OHIO.

GABBURETER. I

Patented Sept. 3, 1912.

sum1 No. 653,667.

lBe it lmownthat I, JOHN W. RAYMOND, a

-citizcn of the United. States,.residing at ',Dayton, in the ycounty of Montgomery andl State of Ohio, have invented a new and usej ful'Carbureter, of which the following is a specilication.

'The object of m invention is to produce a` `ycarbureter of igh efficiency and uniformity of action under all conditions.

A further object of my invention is `to so form\the several vparts that they ycan be v invention.

elevation; Fig` 3 a manufactured and assembled at minimum expense, and be interchangeable.

The accompanying Figure 1 is a vertical section; 2 a side plan; and Fig. 4 a plan on line 4--4 of Fig. 1.

, desirable capacity.

In the drawings, 10 indicates the main lbody of the carbureter of basin-like form in vasolene chamber 11 -of order to produce a Formed integrally` with main' body 10 within the chamber 11 is a circular partition or wall 12. Within and substantially coaxial W" h this partition, at the bottom of the cham `r formed there i Ain', is a central vertical spu having an .axial passage 1li` commumca't. g Wlth the bottom of chamber 11. CasingplO at the side nearest partition 12 is provided with a hollow lateral extension 16 through which is 'formed a substantially vertical air passage 17, which at its lower end communi- Gates, through an opening 17,', in the intermediate wall 10 of the casing vv10, with 5. 1e

lower end ot the chamber formed bythe cylf inder Wall 12. The chamber 18, formed within Wall 12, is open at its upper end and is preferably machined so as to receive an automatic airflow controlling unit. The air-Ilow-controlling, unit is formed in thel -following manneriA thin shell or tube 19 freely fitting chamber 18 is provided at its lower end with an inwardly projecting au.- nular tlange21. Freely axially slidable in shell 19 is Aan air-ilow controlling shell 22, the main portion or vupper end of which is of materially less diameter than shell 19. Near its lower endthe shell 22 is outwardly and downwardly flared, as indicated at 23, and its extreme'lowerend is'downturned, at 24, so as to form a sliortcylindrical or tion having 'a free itwithin shell 19. his down-turned-portion 24 :is not absolutely csf drawings illustrate my 4 sential, but it is preferable in order that the ylower edgefothe outwardly flared ortiou 23 may not unduly Wear the shell 19 y reason vof the repeated reciprocations of the shell22. Closing the upper end of shell'19 L is an annulus v26, preferably provided around :its interior with a down-turned flange 27 which surrounds land extends below the up- ,per end of shell-22. The annulus 26 is preferably soldered or'otherwise secured toshell 19 so as to thus produce an` air-flow con-` :trolling unit which canbe properly adjusted .in the factory and be guarded against un.

4skilled change and manipulation.

I have found in practice that, in order to get the-best results under all conditions of weather, the shell 22 should be very light in order that its resistance to inflow of air be so light that it will be very sensitive to Slight changes of velocity of flow of incom- Between shells 19 and 22, and above theA outwardly and downwardly flared portion 23 ot shell 22, I ind it desirable to place a very light coil spring 28, the upper end ot which 1s engaged by the annulus 26. This spring 28 should be verylight and so ad# justed that when the shell 22 is in its normal position, as shown in Fig. 1, there will be no material compression of the spring, it being the intention that the combined gravity resistance of shell 22 and the compressive resistance of spring 28shall be very small.

The axial length of the air-flow controlling unit above described is substantially ,equal to that portion of the uiper end of chamberlS which lies above the inwardly projecting annular flange 29 formed integral with wall 12.

The upper end of passage 14 is threaded at 14 to receive the threaded lower end of a nozzle shank 31 which is axially perfo- The diameter ofthe head 41D0 rated by a fuel passage 32, the upper end of" which is shown in full size in the acgun- 75 ing air. By this means very small difer-'4 f f mg a thorough carburetion of the air.

A lary passage als Yshoulder 41 of with the 'in manutiuzture,

upper` end of shank 31, immediately be! neathhead 35, is a circular 'enlargement 37 which is perforated by a plurality of 'lateral assages 38 which lead from bore 32', immeately above valve seat 34, to the base face 36 of head 35. Sleeved over shanktll is a sleeve 39, the up er end of the bore of which is sufficiently enllzirged to receive the portion 87, said portion seating firmly upon the the sleeve. The lower end of sleeve 39 has an external diameter substantially equal to the external diameter ofy Spud '13, but its upper end yhas an external diameter substantially equal to the base of head 35, the said upper end being formed in a substantially' flat face substantially parallel with the base face 36 of head 35. 'lhe axial length of the circular enlargement 37 is a trifle greater than the axial depth of shoulder 4l from face 42, so that when the parts are assembled, as shown in Fig. 1, the sleeve 39 will be clamped in place by shank 82 and the face 36 will lie above face 42 such distance that the capillary action ot the two faces. 36 and 42 upon the fuel tobe used will brin the fuel to the circumferem-e ol the capil ary passage thus formed.

sharp outer ed esnand the plane 'of the capiletween the two surfaces is substantially the plane of the junction between the main body ol shell 22 and the upper end of the flared portion as clearly indicated in Fig. 1. By this arrangement, the resistance to outiow of tucl from the capillary passage thus rially affected by consideralilechanges in level ofthe fuel in chamber 1l, and at all times there will be presented to the intlowing air, coming in through passage 1T, a circu lar line of fuel which, in the sif/,e shown, will be nearly four inches inl length, thus insur Opposite the extension lli, the main body l() isprvovided with a small hollow extention 5l, the interior of which communicates upper end of the l'uel chamber ll. 'lhe upper and lower walls oi' this extension are perforated by threaded perl'orations 52 and 53, respectively, which for convenience are co-axial and threaded alike. l'hreaded into the upper perforation 52 is a plug 54 which is vaxially bored to receive the stem of a. valve 56 adapted to scat in the upper end of the axial bore 57 of a plug 58 threaded into erforation 53. livoted at 59 in the extension 5l is a float lever Gl, one arm of which is projected into a circumferential groove G2 formed in val'o 5G and the other end of which carries the usual mail 63 larranged within the fuel cham- Suu' 4faces 36 and 42 are brought to substantially formed is not mate- Fig. 58, at its lower end, is enlarged and threaded at 7l to receive a cap 72 across the upper end of which I arrange a tine screen 73, lthe said screen vconveniently being soldered or otherwise secured across the open upper end of cap 72. Cap 72 is' perforated and threaded at T4 to receive the upper end of a fuel inlet pipe 75.

Secured to the upper end of the extension 16 ot' body 10 are standards 81 which carry and guard an air screen 82, which is conveniently a cylinder formed of fine wire mesh carried )y an upper cap 553, attached to the upper ends of standards 81, and still'- ened at its lower end by a ring 84 fitting vwithin the upper end of passage 17.

Secured to the upper end of main bod 10 to forni a cap or cover for the upper en s of chambers 11 and 1S is a hollow mixture outlet 85, the lower end of the mixture passage '5G registering with annulus 26 and the upper end having a suitable throttle valve 87 mounted therein. 4 upper wall of the structure 85, at 88, is the threaded portion 89 ot' the shank of the needle valve .'53, said shank being provided al: itsnpper exposed end with a knurled head 91. by which it muy be adjustc'and, if desired, with a set nut 92 by mean. of which it may be held in adj usted position.

An air-flow controlling valve 93 is mounted in the air inflow passage 17 and at the bottom of said passage, I provide a drain passage 94 through the bottom of main body l0. V

ln order that the level of fuel within the carbu reter may be determined, I provide the main body l() with a sight opening 95 closed by a' transparent cover 96 and retaining cap 97. l

It will be noticed that. in machining the main body 10 practically the ent-ire work may be done at ina holding jig. body is clamped i a single setting of the body For. this purpose, the main n its jig open end up and the entire upper tacc milled or turned S0 9.8

to form ut one operation the seatv for the mixture outlet structure 85 and for plug 54. Bore 14 can be extended through the of: chamber ll to provide for the reception ot the drain cock 99, and when formed will serve as a center fora roaming `tool by mea-ns of which tho interior of the u per end ot .chamber 18, `and the upper en s of flange 29 and spud 13 may be simultane-` ously faced. Threads 14 may, also be formed so as to be accurately centered with relation to chamber 18. Perforations 52 and E-may also be formed and threaded so that valve 56 will be easily and accurately positioned with relation to 110x157.

JIn practice, I find that the air-flow controlling umt 'may be very cheaply, accurately and satisfactorily formedy from parte ofspun or pressed sheet metal.

bottom Threaded through the By various arrangements and const-ructions of parts I have described I have heen/fy able to produce at very lowcost a carbur/etr which, in practice, has proven to beaccurate and efiicient in its operation under. ll ordi; nary ranges of 'weather conditie/'nyc' I claim as my invention: A U

1. An air-[low controlling uniff'or carbu!l rcters comprising a container shell having` an inwardly projecting flange at one end,/ an axially reciprocable tubular/ shell mounted in the container and formed at one end with an outwardly and downwardly flaring 0rtion terminated by a downwardly exten ing portion substantially parallel to the main upward portion, a retaining ring arranged at the open en'd of the container and surroundingr the upper end of the tubular shell, and acoiled spring` arranged within the container between said retaining ring and the tubular shell.

2. An air-flow controlling, unit for carbureters comprisingr a container shell having an inwardly projecting {iange at one end, an axiallv reciprocable tubular shell mounted in the container and formed at one end with Aan outwardly and downwardly Haring or tion terminated b y a downwardly exten ing portion substantially parallel. tothe main upward portion, and a reta-ming ring ar- ,y 1 n s/rroiinding the upper end of the tubular Shelli ,i y

3f A11/air-tiow controlling unit for carbur'et/ers,cbinprisin a' containershell having an /iixiaily reciprocable tubular Shell mounted Ithe contalneixa/nd formed at one end with /ur outwardly 7and downwardly Haring portion, a retaining ring arranged at .the open end otthe/ container and surrounding the` upper end of the shell, and a coiled sprin arranged within the container between sai retaining ring andthe tubular shell. i

4. An air-flow controlling unit for carbureters` comprising;r a container shell having an inwardly projecting flange at'one end, an axially reci rocable tubular shell'mounted in the container and formed at one end with an outwardly and downwardly flaring portion, and a retainingr ring arranged at the o )en tlie upper end of the tubular shell.

In witness whereof, I, have hereuntoset vmy hand and seal at Dayton, Ohib, this 3 day of October, A. D. one thousand nine hundred and eleven.

JOHN W. RAYMOND. [n

Witnesses A.. I. EAs'rMAN,

Ae] o. y

ranged at the open end ofthe container and ADELE UNGER.

inwardly pro]ecting flange at one end, an y end of the container and Surrounding i 

